package com.itcast.service;

import com.itcast.pojo.Member;

import java.util.List;

/**
 * @author 冯志立
 * @create 2020-01-01 11:21
 */
public interface MemberService {
    Member findByTelephone(String telephone);

    void add(Member member);

    List<Integer> findMemberCountByMonth(List<String> list);
}
